Honing and stropping apparatus.



F. REGENOLD.

HoNlNG AND STROPPING APPARATUS; APPLICATION FILED 'AUG.5, |915.

2 SHEETS-SHEET 1.

@mL-M F. REGENOLD.

HONING AND STROPPING A'PPARAVTUS.

APPLICATION FIIIED AUG-5,1915.l

Patented June 13, 1916.

2 SHEETS-SHEET 2.

dv A A J1/wanton I7 gegen-olaz, @a @5% Vf. l l"" www WW1/Lamo .FREDERICK REGENOLD, OF MEMPHIS, TENNESSEE.

HONING AND STROPPING APPARATUS.

Specicaton of Letters Patent.v

Patented J une 13, 1916.

Application filed August 5, 1915. Serial No. 43,858.

To all 'whom t may concern:

Be it known that I, FREDERICK REGENOLD, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have inventedv certain new and useful Improvements in Honing and Stropping Apparatus; and I dodeclare'the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in honing and stropping machines for razor blades, being more particularly designed for sharpening safety razor blades.

One object of the invention is to so construct a blade sharpening machine that the blade to be ground is yieldably .held and operated to alternately bring the faces of the edge of the blade to be sharpened against the sharpening rolls between which the blade is supported.

-Another object is to construct a machine of this character in which the blade holder will automatically adjust itself to conform to the contour of the hones.

vWith these and-other objects in view, the invention consists of certain novel features of construction, and combination and arrangements of parts as will be hereinafter more fully described-and claimed.

In the accompanying drawings: Figure 1 represents a front elevation of a machine constructed in accordance with this invention; Fig. 2 is a plan View thereof with irts broken away; Fig. 3 is a rear elevation thereof; Fig. 4 is a transverse vertical section taken on the line 4-4 of Fig. 3. Fig. 5 is a .detail end view showing the application "1 of the honing strops to the grinding rolls.

In the embodiment illustrated a supporting frame is shown comprising a base 1 having a table 2 supported in a plane thereabove by means of standards 3. Rising from the table 2 at opposite edges thereof are a plurality of bearings 4 arranged in pairs and spaced longitudinally to support the shafts of the apparatus to be described. Revolubly mounted in two pairs of these bearings 4 are shafts 5 and 6 which extend transversely of the frame and project at opposite ends beyond the sides of the table 2.

Secured to the front ends of these shafts 5 and 6 are sharpening rolls and 8' which may be composed of anvA suitable material and which are here shown held in operativepositions on the shafts by means of thumb nuts 9.' The portion of the shafts 5 and 6 on which the rolls 'Z and 8 are mounted, are longer than the rolls are wide and have spacing collars 5a and 6a arranged between the inner ends of the rolls 5 and 6 and their' bearings 4, said collars being secured to the shafts by pins 5b and 6P whichvv extend transversely through recesses in the ends of the collars and through the shafts adjacent the rolls, said rolls having recesses in their adj a cent faces to receive the pins which thereby assist in retaining the rolls in fixed relation on the shafts. Wing nuts 9 are shown on the outer ends of the shafts 5 and Gbetween which and said collars 5a and Ga the rolls are clamped. l

On the rear ends ofthe shafts 5 and 6 which project beyond the table 2 are gear wheels 10 and 11 of corresponding size and which mesh with each other for imparting rotary motion to the shaftsv carrying the sharpening rolls. A pinion 12 is fixed to the rear end of the shaft G and meshes with a driving gear wheel v'13 which is mounted on a shaft 14 extending transversely of the supporting frame and mounted in one pair of the alined bearings 4. This shaft 14 is here shown provided with a crank handle 15 for operating it, although obviously it may beoperated by power if desired. Midway between the bearings which support the shafts 5 and G are two brackets 16 and 17 which are here shown depending from the table 2 and in the lower ends of which is revolubly mounted a shaft 18 which extends beyond the outer faces of said brackets and projects beyond the plane occupiedby the rolls 7 and 8 at one side and beyond the actuating gear train at the other side. The rear end of the shaft 18 has a spring Alever or link 19 secured .at right angles thereto, said link extending upwardly and connected at its upper end to a pitman 20. 'This pitman is eccentrically secured at its other end to the driving gear wheel 13 as shown at 21 and is designed to impart a rocking motion to the shaft 18 through the lever 19, said lever 1,9 being yieldable for a purpose to be described.

Adjustably mounted on the front end of the shaft 18 between the sharpening rolls 7 and 8 isa sleeve 22 herein shown held in position on said shaft by a set screw 23. This sleeve 22 has a. socket 24C extending upwardly therefrom and'communicating with the bore of the sleeveiand which is designed to receive the shank or stem 25 vof a blade holder 26 forming a l-shaped coupling for Vconnecting the blade holder 26 and the shaft 18. rllhis stem 25 loosely engages the socket 24: and both are made round to adapt said stem to turn Within said socket to permit the automatic adjustment of the blade holder ,in relation to the sharpening surfaces of the l ,tion ofv the blade holder in relation to the sharpening rolls for ay purpose to be described, the socket having a bore 24 extending transversely therethrough to receive the pin. Secured to the shaft 18 between the bearings in which said shaft is mounted and preferably'near the rear bearing thereof is a collar 29 which is adjustably held on saidV shaft by a set -screw 30` A coiled spring 31 is arranged on the shaft 18 between the front bearing thereof and the collar 29 and is designed to exert its tension for forcing the shaft 18 rearwardly.

A shaft shifting lever 32 is fulcrumed intermediately of its ends on a bracket 33 carried bythe lowerjface of the table 2. r1`his lever 32 has one end thereof bifurcated and lthe furcations 34 thereof straddle the shaft 18 at the rear of the collar 29 fora purpose to be described. The other end of this shaft 32 is shown provided with a roller 35 positioned for engagement by a cam 36 secured to the driving shaft 14C between the bearings thereof. rlhis cam is so constructed and positioned that the roller 35 which is arranged in the path thereof is engaged thereby and on the turning of the shaft 111 the lever 32 is operated to slide the shaft 18 forwardly against the tension of the spring 31 at predetermined intervals so as to cause the blade holder 26 to be moved longitudinally forward between the sharpening rolls 7 and 8 and when the other face 38 of the cam 36 passes under the roller 35, the lever 32 is adapted to be moved in the opposite direction which is accomplished by means of the coiled spring l31 expanding and therebiy forcing the shaft 18 rearwardly causing the blade holder 26 to be moved in a direction opposite to that in which it is moved by the lever 32 when the roller 35 thereof rides up lon the ,cam face 37 F rom the above description it will be obvious that the turning of the driving shaft maar?? 14 'will thus reciprocate the blade holder shaft 18 to cause the blade carried thereby to be engaged with different portions of the grinding rolls and thus produce an equal wear on said rolls.

r1`he table 2 is here shown provided with an opening 2 therein through which the lever 32 projects as is shown clearly in F ig. 2, said lever being arranged at an oblique angle to adaptitsupper end for contact with the cam 36anditslower end for engagement with the shaft 18.

1n the operation of this improved stropping machine the blade B to be ground is first clamped in the holder 26 and the turning of the shaft 14 causes the train of gearing connected therewith to be set in motion whereby the rolls 7 and 8 are rotated in opposite directions and which turn about five or six rotations to one rotation of the gear 13 owing to the difference in size of gear 13 and the pinion 12 with which it meshes and through which motion is imparted ,to said rolls by means of the intermeshing gears 10 and 11 carried by theshafts thereof.

A single rotation of the drivinggear 13 causes the pitman 20 to be reciprocated first in one direction and then in the other whereby the shaft 18 is rockedthrough the yielding link 19 connected with said pitman andshaft so that the blade holder carried by the shaft 18 is first engaged with one sharpening roll and then with the other and simultaneously said blade is reciprocated longitudinally between said rolls by means of the engagement of the cam 36 with the roller 35 on the shifting lever While a spring is shown for shifting the shaft 18 in the direction opposite to the shifting movement imparted by the lever 32 it is obvious that this spring may be dispensed "with and the caml 36 so constructed as to impart a reciprocatory motion to said shaft through the lever 32.

link 19 which connects the shaft 18 with the pit-man 20 will yieldably hold the blade applied the machine may be used for stropping the blades B the. pin 24 having i been removed to permit the blade holder to drop down and thus conform to the increased 4diameter ofv the rolls? the size of lli wir

which is increased by ,the thickness of the strops, and thus prevent the bevel of the blade being changed.

It will thus be seen that these stropsmay be readily and quickly applied or removed adapting the one'machine to perform two functions either honing or stropping as may.

be desired. When it is'desired vto hone the blades the strops are removed and the pin 24; inserted across the socket. 24 so that the blade holder 26 would be raised to maintain the same bevel on the blade.V

I claim as my invention: 1. A device of the character described comprising ya table, a power shaft and a v pair of sharpening rolls revolubly mounted '2. A device of the character described f' f comprising a table having' an opening therein, a power shaft and a pair of sharpening rolls revolubly mounted above said table, the former having a cam fixed thereto, a pair of brackets depending from said table, mounted in said brackets, a blade holder attached to said rock shaftV andv disposedv an endwise movable rock shaftbetween said rolls, acollarjfixed to said rock shaft between said brackets, a lever pivoted intermediateits ends to said table and extending through saidl opening therein, one end of said lever having engagement with said cam, the other end of said lever being bifurcated and having Aengagement with the collar on said rock shaft for moving the -latter longitudinally in one direction, a

coiled spring disposed between one of said brackets and 'said collar and around said rock shaft'for moving the latter longitudinally in the other. direction, means for rocking said rock shaft, and means lfor revolving said rolls. i

3. A device of the character described comprising a support having a plurality of bearings thereon, a pairof sharpening rolls,

a power'sh'aft and an endwise movable rock shaft mounted in said bearings, a train of gears connectedwith said 'power shaft-"for revolving said rolls in opposite directions,.

a resilient lever connected to said rock;- shaft,

' a pitman having one of its ends eccentrically connected to said epower shaft, the other end of said pitman being connected to said lever,

an additional lever pivoted to said support,

and a cam fixed to said power shaft for operating said additional lever, the latter havv ing engagement with said rock shaft for reciprocating the latter. f

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. v Y

FREDERICK `REGENOLD.V

Witnesses MILES CARROLL, MYRTLE vSLAmiH'rER. 

